I asked R later if he was woken by the noise and he said no. He suggested something was happening next door with air con plant. There was nothing to see.
Blow my feather down, the same thing the next morning and these bits appeared on the roof, along with a couple of chairs on the left of the photo. This time the jack hammer did wake R.
Saturday night we could see lights on in the plant room when we went to bed. Sunday morning these had appeared, replacement units of the above.
Incredibly the old air con unit had been lifted out and a new one dropped into position. This is a huge unit and the things on the roof above look like they are very heavy, so there is only one conclusion, while we slept a crane was set up and lifted things in and out and we did not even know. I had my blind up as well. How could we have slept through the inevitable noise?
I could scarcely believe this could all happen just metres from our bedroom windows and neither of us was woken. And why was it necessary to jack hammer and cut concrete out of work hours the previous days?
Nothing happened Sunday night but Monday morning the pump looking things had disappeared from the roof and no doubt things were being connected up. Workers were having a smoko break. Smoko if you don't know is a break for workers to have a cigarette and rest, and in the days of old the time to roll their cigarettes. I am not sure how wide spread the usage is, but Tradie Brother takes 'smoko' to work, his morning tea to have during the break.
I just hope the new unit is quiet.